Sender rank in Hop-by-Hop option has inverted bytes
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43731dbb68
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b6742e5eb5
1 changed files with 8 additions and 6 deletions
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@ -68,6 +68,7 @@ rpl_verify_header(int uip_ext_opt_offset)
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{
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rpl_instance_t *instance;
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int down;
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uint16_t sender_rank;
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uint8_t sender_closer;
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uip_ds6_route_t *route;
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@ -117,17 +118,18 @@ rpl_verify_header(int uip_ext_opt_offset)
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down = 1;
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}
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sender_closer = UIP_EXT_HDR_OPT_RPL_BUF->senderrank < instance->current_dag->rank;
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sender_rank = UIP_HTONS(UIP_EXT_HDR_OPT_RPL_BUF->senderrank);
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sender_closer = sender_rank < instance->current_dag->rank;
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PRINTF("RPL: Packet going %s, sender closer %d (%d < %d)\n", down == 1 ? "down" : "up",
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sender_closer,
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UIP_EXT_HDR_OPT_RPL_BUF->senderrank,
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sender_rank,
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instance->current_dag->rank
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);
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if((down && !sender_closer) || (!down && sender_closer)) {
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PRINTF("RPL: Loop detected - senderrank: %d my-rank: %d sender_closer: %d\n",
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UIP_EXT_HDR_OPT_RPL_BUF->senderrank, instance->current_dag->rank,
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sender_rank, instance->current_dag->rank,
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sender_closer);
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if(UIP_EXT_HDR_OPT_RPL_BUF->flags & RPL_HDR_OPT_RANK_ERR) {
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PRINTF("RPL: Rank error signalled in RPL option!\n");
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@ -210,7 +212,7 @@ rpl_update_header_empty(void)
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switch(UIP_EXT_HDR_OPT_BUF->type) {
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case UIP_EXT_HDR_OPT_RPL:
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PRINTF("RPL: Updating RPL option\n");
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UIP_EXT_HDR_OPT_RPL_BUF->senderrank = instance->current_dag->rank;
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UIP_EXT_HDR_OPT_RPL_BUF->senderrank = UIP_HTONS(instance->current_dag->rank);
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/* Check the direction of the down flag, as per Section 11.2.2.3,
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which states that if a packet is going down it should in
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@ -276,7 +278,7 @@ rpl_update_header_final(uip_ipaddr_t *addr)
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UIP_EXT_HDR_OPT_RPL_BUF->flags = RPL_HDR_OPT_DOWN;
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}
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UIP_EXT_HDR_OPT_RPL_BUF->instance = default_instance->instance_id;
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UIP_EXT_HDR_OPT_RPL_BUF->senderrank = default_instance->current_dag->rank;
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UIP_EXT_HDR_OPT_RPL_BUF->senderrank = UIP_HTONS(default_instance->current_dag->rank);
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uip_ext_len = last_uip_ext_len;
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}
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}
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@ -334,7 +336,7 @@ rpl_invert_header(void)
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PRINTF("RPL: Updating RPL option (switching direction)\n");
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UIP_EXT_HDR_OPT_RPL_BUF->flags &= RPL_HDR_OPT_DOWN;
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UIP_EXT_HDR_OPT_RPL_BUF->flags ^= RPL_HDR_OPT_DOWN;
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UIP_EXT_HDR_OPT_RPL_BUF->senderrank = rpl_get_instance(UIP_EXT_HDR_OPT_RPL_BUF->instance)->current_dag->rank;
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UIP_EXT_HDR_OPT_RPL_BUF->senderrank = UIP_HTONS(rpl_get_instance(UIP_EXT_HDR_OPT_RPL_BUF->instance)->current_dag->rank);
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uip_ext_len = last_uip_ext_len;
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return RPL_HOP_BY_HOP_LEN;
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default:
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